Furnace-charging apparatus.



P3D. GANHAM. PUBNAGE GHABGING APPARATUS.

APPLICATION FILED'IPB. 16, 1911.

Patented Sept. 9, 1913. nir' fr s4 "Ans Para orne PEBCY ID. CANHAMyOFNEW YORK, N. Y., ASSIGNOB TO POWER SPECIALTY COMPANY,

OF NEW YORK, N. Y., A CORPORATION F NEW YORK.

FURNAGE-GHARGING APPARATUS.

Specification of Letters Patent.

Patented Sept, 1913.

i To all 'whom t may concern.'

Be it known that I, vPnRor D. CANHAM, a subject of the King of GreatBritain, residing at New York, county of. Richmond,

' andbtate of New York, have invented cervide an improved apparatus forythe purpose, simple and compact in construction and posltive in action.

A further object is to provide an appa-y ratus by which the fre chargecan be spread evenly over the fire so that all parts 'of the freshcharge vshall be consumed at` substantially the same rate.

ing raise To these and other ends the invention consists in the novelfeatures of construction and combinations of elements hereinafterdescribed, and more particularly set forth in the claims.

A convenient and efficient embodiment of the invention is illustrated inthe accompanying drawings, in which- F1gure 1 is a view in verticallongitudinal section, showing a cellof a destructor furnace and thefeeding or charging ap aratus therefor. Fig. 2 is a sectional p an viewof the 'charging apparatus, on line 2--2 of Fig. 1. Fig. 3 is across-sectional view on line 3-3 of Fig. 1, looking in the direction ofthe arrows.

One. cell of the destructor furnace is shown atL 10, provided with amouth 11, belowthe stoking floor 9,through which 'the material to beburned is introduced. 'llhe mouth may be closed, after the furnace ischarged, -'b "a sliding door 12 capable of beand lowered by any suitablemeans, not shown. The material is burned on a slidin y`grate 13, whichmay be withdrawn bodi y by a ram 14 to discharge the l accumulatedclinker/into the clinker pit 15,

as described in the scopending apphcation of Ernest I-I. Foster,k SerialNo. 539,103,

vined January ao, 1910.

In linewith the charging mouthll is .the charging or feeding apparatus,comprising an e o ngated longitudinally movable frame 16 of suitableconstruction, mounted between lower supporting rollers 17 and upperguide rollers 18, journaled in brackets su ported by transverse angleirons 18, and etween lateral guide rollers 19. The sides of this w frameat 4the end next to the furnace are closed by side plates or walls 20,and the bottom between' these walls is closed b a plurality oftransverse bars or slatsilexlbly connected together in any convenientmanner, not shown, to form a flexible bottom 21. This flexible bottom atthe forward end of the frame passes over idle rollers at each side ofthe frame, one ofthe rollers being shown at 22. Connected to|each end ofthe bottom are two chains 2 3, passing over sprockets 211,011 a shaft 25journaled in the sides of the charging frame. In each chain one or moreturn buckles 26 are provided, to regulate the tension of the belt formedby the chains and the flexible bottom ofthe charging receptacle or pen.Mounted on the said bottom at the rear end thereof is an upright plateor back wall 27, extending across the entire width of the chargingframe. The frame itself is just narrow enough to pass freely into thefurnace mouth. 'The shaft 25 is also provided with two pinions' 28,01?the same pitch diameter as the sprockets 24, in position to mesh with apair of fixed horizontal racks 29, as the chargingframe is movedforward.

From the foregoing it will be seen as the charging frame is advancedinto the furnace mouth the p-inions 28 will engage the racks 29, thelatter being of such length as to be engaged by the pimons at the timethe forward end of the chargingrece tacle projects through the mouth 11lnto t e furnace. As' the receptacle or pan continues to advance, thepinions, now in mesh with the racks, are rotated and with them thesprockets 24, causing the flexible bottom of the pan to travel over therollers 22. The result is that material in the pan is carried to theopen forward-end thereof and dropped 0E as the pan advances. Firealready on the grate is thus pro ssively blanketed by green material,I eectuall protectmg the pan itself from excessive at. Eventually the 'panreaches-its extreme forward position, as shown in dotted lines 1n Fig.1, 1n

which positionthe flexible bottom has assed below the idlers 22 and therear wal 2'( is at the front edge of the pan. The frame m to support theiiexi le bottom 21 as it sags under weight and to prevent dripping on tothe grate-actuating mechanism or other de-,

vices below the pan. Inasmuch as this dripplate is stationary relativelyto .the movable bottom of the pan it will be seen that the said plate isscraped clean. each time the pannottom moves over it.

Any convenient and suitable means may be employed to advance and retractthe charging frame, as for ex mple. a iiuidpressure ram 31, the pistonrbd 32 of which is connected to a cross member 33 immediately in rear o1the charging pan. The ram may be mornted in suitable sulpports 34extending upwardly through t e rear portion of the charging frame. Inusing a ram to actuate the frame, it is particularly advantageous,though of course vnot absolutely essential to have the discharge of the,material fromthe pan take place durin the forward stroke for the reasonthat in t is stroke A the full area of the piston head (indicated indotted lines in Fig. 1) is subjected to the pressure behind it, whereason the backward or return stroke .the effective area of the head issmaller by an amount equal to `the cross sectional area of the pistonrod. In other words, the heaviest duty is performed while the ram isoperatin at its greatest efficiency and the lighter Vuty, of merelyretracting the empty frame, is performed during a period when the ramisnecessarily working with lower efficiency. In consequence a smallerram can be used than where the material is discharged on the y backstroke.

As shown in Fi 1, the char a aratus is located imediately belovllgiesptiik- .ing floor 9. The latter is provided with an o ening 35 abovethe initial position of the c aging an. The latter cany therefore be reay ed by shoveling the material, indicated at 36, through the opening.VBack of the char pan the to of the frame is closed by4 a late 37,which), moving forward with the a1 e, progressively closes the openingin the ioor above.

The apparatus herein specifically illustrated is simple vand convenient1n construction and efficient in operation, and is the form. IA prefer,but the invention is capable -of embodlment in other forms Awithout'.departure from its proper spirit and scope.

I claim: 1. In a furnace-chargmg apparatus, 1n combination, a chargingreceptacle movable horizontally intoA and out of the furnace,

of the furnace, and having a flexible travely ing bottom, and meansoperable as the receptacle moves inwardl for causing the, flexiblebottom to pass over and under the forward'l edge of the receptacle, todischarge the contents of the latter.

3. In a `furnace charging apparatus, in combination, a chargingreceptacle having a horizontal iiexible traveling bottom, means foradvancing and retracting the receptacle into and out of the furnace, andmeans operable in the advancing movement of the receptacle for causingthe bottom of the receptacle to travel longitudinally with respect tothe receptacle to discharge the contents thereof.

4. In a furnace charging apparatus, in combination, a chargingreceptacle having a flexible bottom, support-in means for said bottom atthe forward e ge of the recep- 4and rearwardly under the said supportingmeans, means for advancing and retracting the receptacle and a rackarranged to mesh with and rotate the pinion and said second mentionedmeans as the 'receptacle moves into and out of the furnace.

5. In a furnace charging apparatus, in combination, a chargingreceptacle, a flexible bottom therefor, supporting idlers for the bottomat the forward edge of the recentacle, a inion associated with thereceptacle in rear t ereof,l means connecting the flexible bottom andthe pinion whereby rotation of the pinion will cause the bottom totravel over and under the idlers, means for ad vancing and retractingtherece tacle, and a stationary rack, adjacent to e rearward position ofthe receptacle and adapted to meslr with the pinion to rotate theflexible bottom in opposite directions as the receptacle moves into andout of the furnace.

6."In a furnacechargingappa'ratus, combination, a movable lchargingreceptacle having a flexible traveling bottom, means for actuating thebottom as the receptacle moves inward, to discharge the contents of thereceptacle, and a rear wall forA the recegtacle, movable-with theflexible bottom.

. In adestructor furnace, in combination,

a charging receptacle movable horizontally into and out ofthe furnace,said receptacle having a flexible traveling bottom, support'- ing meansadjacent each end of the receptacle over which said flexible bottom isada ted to move, and means operable by the inward movement of thereceptacle foreausing said bottom to move and discharge the contents ofthe receptacle.

8. In a furnace charging apparatus,l in combination, amovable chargingreceptacle having a flexible, bottom composed of trans- .verse bars orslats, means for causing the bottom to pass over and under the forwardedge of the receptacle as `the receptacle moves, and an imperforatebottom under the flexible bottom and stationary relatively thereto butmovable, with the receptacle.

9. 'Ihe combination with a destructor fur.- nace, of a stoking floorhaving a charging opening, a charging frame movable longitudinally belowthe stoking Hoor, a furnace charging receptacle arranged at the front ofthe fr ame and adapted to be filled with refuse through the saidcharging opening, a closure plate mounted on the frame in rear of thereceptacle whereby to close the charging opening in the stoking flo'oras the receptacle advances, means below said closure plate 'foractuating the charging frame and.

receptacle, and mechanism operable by the movement of the receptacle fordischarging the contents thereof.

10. In a furnace charging apparatus, in combination, a chargingreceptacle movable horizontally into and` out of the furnace,

said receptacle having a horizontal flexiblev ing the said bottom totravel longitudinally .,1

with respect to said receptacle to discharge the contents thereof.

11. In a furnace charging apparatus, in

combination, a charging receptacle having its forward end open andmovable horizontally into and out of the furnace, said receptacle havinga flexible traveling bottom, and means operable as the receptacle movesinward for causing the said bottom to travel and discharge the contentsof the receptacle over the front edge thereof.

12. In a furnace charging apparatus, in combination, a chargingreceptacle having a traveling bottom, means for advancing and retractingthe receptacle into and out of the furnace, means adapted to connectwith the traveling bottom after the forward edge of the vreceptacle isin the furnace to operate the movable bottom for discharging the con!tents of the receptacle, said means being disconnected from thereceptacle at a prede terinined point on its return movement whereby themovable bottom is properly positioned in the 'receptacle for the nextcharge. In testimony whereof I affix my signature in the presence of twosubscribing witnesses.

A PERCY D. CANHAM.

' Witnesses:

BERT. C. SANDMAN,

N. LAWSON DYER.

